若函数
有3个不同的零点,求实数
取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de0fad214fcf7177676371ec4ecb74dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
更新时间:2021-08-30 10:47:20
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相似题推荐
解答题-问答题
|
较难
(0.4)
【推荐1】
为圆周率,
为自然对数的底数.
(1)求函数
的单调区间;
(2)求
,
,
,
,
,
这6个数中的最大数与最小数:
(3)将
,
,
,
,
,
这6个数按从小到大的顺序排列,并证明你的结论.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86ebba6ed1add0fe647c0226614b9290.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d218992d1942266d7208e476d0c4100.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f53f81bca037a4383c1fab122a3cd3d.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07a4bb7f5e102cda82e1a7ed31e70c22.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ffa31d253f74945e241f43ad3effc3fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69dd4369ac7538bb071d79faa7578ccc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd652b2235a4a2a33f39c1a0b9f765d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a502b7f294957bb965e067edc71df383.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2630c7a7fa2ed24dec128d92e24c224c.png)
(3)将
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07a4bb7f5e102cda82e1a7ed31e70c22.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ffa31d253f74945e241f43ad3effc3fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69dd4369ac7538bb071d79faa7578ccc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd652b2235a4a2a33f39c1a0b9f765d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a502b7f294957bb965e067edc71df383.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2630c7a7fa2ed24dec128d92e24c224c.png)
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解答题-证明题
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解题方法
【推荐2】已知函数
.
(1)若对
时,
,求正实数
的最大值;
(2)证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdfd509af00960319b088b20d3d4189a.png)
(1)若对
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b705b0958495774d529c2e2a6c3ae94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e9c599e8d420006448905acec2b8234.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/477b45c90cd1fd5bd772d5b93e1c7508.png)
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解答题-证明题
|
较难
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解题方法
【推荐3】已知函数
有两个零点
,
(
),求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ed8b498777787371de65159bd614e3f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aec19b68e3add9d5bfcc6269a1855b87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26d8dafc71b106f39f4e15442220897b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fbdaa3d76d186bdd3435d949a6a4f8a0.png)
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名校
解题方法
【推荐1】已知函数
,
.
(1)当
时,求函数
的极值;
(2)若
是正整数,
且对任意
恒成立,试求
的值及
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44266d059b82e7517ec4ed8b46d7f096.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49cf2e2c3fc4629ca412ed96152cf9ab.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/143b917df0520097be222accbddf9394.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f25a5d7f6bd63c015681d0101567ad01.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f15eaba590f5e4d4b5c9610c2d7d9804.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/966b60302d80d8613675bb3dd5c03164.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
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解题方法
【推荐2】已知函数
,
,
,且
.
(1)若
,
,求函数
的极值;
(2)设
,当
时,对任意
,都有
成立,求
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47d99099727587367143039fd61ce2aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2dd0914dc4d4c7f75710ff460a286fcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a3c442579603164f3fc19458677d307.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7646f2f6c1d40a3fa2378ecd038bf58a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66692ec49a458f9e48c7315d03dfc37b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f15318d2d6664ecdf81180baf70a0c71.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
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【推荐3】设
.
(1)求函数
的单调区间和极值;
(2)若关于x不等式
在区间
上恒成立,求实数a的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f52efa1028c78aab888cb3f4f3ecf42.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3412b3032b48a41809613f89968a7857.png)
(2)若关于x不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7a3713bb22838d9432c9e484c537e8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ed2f490aac02631c2ed9e6b76354a49.png)
您最近一年使用:0次
解答题-问答题
|
较难
(0.4)
【推荐1】设函数
.
(1)求函数
的单调区间;
(2)若函数
在
有零点,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2706c10408e097d5208f0715c75e2585.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ab5e0524def52baf53480b8726784ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6455e38ff53ede2508e4d9cb23f0b86.png)
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【推荐2】已知函数
是
的导数, 证明:
(1)
在
上有唯一的极大值点;
(2)
在
上有且仅有两个零点.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e144a85939e202d4723ca581ff6d9ea7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/724340d69477c0ec2418c392b22b1cab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e22f1c8cec9554fc8bc5df8b5549150c.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3804ab6bd01697282ec0ebb18ebbdef4.png)
您最近一年使用:0次
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较难
(0.4)
名校
【推荐3】已知函数
,
.
(1)求
在
的极值;
(2)证明:
在
有且只有两个零点.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cdc873fc03e6e4d3c4ba02f8b1147b20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d9d46d6ec64d1b923a9f8ec789991dd.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3ff8dca35b759d3051b62badd7d76bc.png)
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cffa662f0273f0921c1fa4727f632395.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82a7792efd7f82bfa7549db4cb6ca761.png)
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